Eyeglasses.



No. 782,545. E PAlENTED FEB. 14, 1905.

W. W. GERVANTES.

- EYEGLASSES.

APPLICATION I-ILBD MAR. 13; 1903.

wnmssasa 5 'IINVENTORV' ATTORNEYS v eyeglasses orspectacles of theframeless'vw, riety, the ob ect thereof being to provide an- NIDTEDSTATES Patented February 14, 1905..

PATENT @FFICE.

WALTER W. CERVANTES, OF NEW YORK, N. Y., AssienoR OF ELEVEN- TVVENTIETHS.TO FREDERICK A.

NEW YORK, N. Y.

WARE AND JOHN-ML, DEEMER, OF

EYEGLASSES. L

SPECIFICATION forming part of Letters Patent-No. 782,545,. datedFebruary 14, 1 905.

ful Improvements in Eyeglasses, of which the following is aspecification, reference being had to the accompanying drawings, forminga part thereof, in which similar characters of reference indicatecorresponding parts.

llns invention relates to improvements in eflicient means for couplingthe lenses to the spring-bow and nose-clips in eyeglasses andnose-bridge in spectacles without the aid of frames for surrounding thelenses, and in such a secure manner as to obviate liability of havingthem become accidentally loosened .from their fastenings, whereby theyare constantly maintained in rigid and properly-extended position. v v

The invention comprises a bifurcated hanger and a semi-ellipticalspring, so arranged as to keep the hanger in secure and proper relativearrangement with the lens, as will be hereinafter fully described, andspecifically set forth in the annexed claim.

' In the accompanying drawingsfforming part of this specification, Ihave illustrated my invention as applied'to eyeglasses.

Figure 1 is a face view of one-half of a pair of eyeglasses having partsbroken away in sectional elevation, and Fig.2 is a sectional plan viewtaken on the line {r 41' of Fig. 1.

1n the practice of my invention the hanger or coupler A, employed forconnecting the lens to the nose-clip and spring-bow embodies a post(Ifan elongated base embodying the longitu(finally-extended parts a,bifurcated clamp u, and the grooved head a all formed integral and ofsoft malleable metal and-being of design and construction similar to theordinary couplers, excepting that, the extended curved arms for contactwith the lens edge do not form a part thereof. Instead of these arms Iemploy a semi-elliptical spring B, composed of highly-tempered metal ofa charac- Application filed March is, 1963. SBI'lElNO. 147,556.

ter considerably harderthan that employed in the construction of theother parts of the coupler, whereby the ends I) of said spring,

which have the functions of the ordinary softmetal arms, can not heaccidentally bent away from the edge of the lens after the parts areconnected. The said spring'B is of a width equal to the distance betweenthe arms of the clamp a, and its ends I) are tapered and rounded at thepoint, whereby no lateral extensions are presented, and it is secured tothe under part of the post (I by means of the screw 1, which has itshead countersunk into the spring, whereby a clear space is providedbetween the edge of the lens and the spring-body part, to

allow play of the spring. This-detachable arrangement allows of readyremoval of the spring from the coupler, while at the same time thedevice embodies an operative whole, susceptible of use in connectionwith lenses and bridge connections of ordinary construction.

The head a of the coupler connects the noseclip C and .the spring-bow D,which are held in place by means of the screw E in the customary manner,and the clamp ct'embraces the lens F and is secured thereto by means ofthe screw 2', which passes through the opening f in the lens F, and thetwo arms of the. clamp abeing threaded'into one of them. i

In the operation and use of the invention the clamp (t' is forcedagainst the tension of the spring B over the Jens F until itsoppositelylocated openings are concentric with the openingf of the lensand held-in this position by the operative until the screw 2 is drivensecurely into place, and owing to the fact that the opening 1" isslightly largerin diameter than the screw the adjustment of said screw.can be readily effected without liability of injuring the lens. Thenupon releasing pressure from the spring the nds thereof, by reason oftheir tendency'to regain normal shape, will force the lens outwardlso'that the wall of its opening is force into contact with one side ofthe screw, thus securely clamping the lensinplace, but at the same timeallowing for expansion and contraction of said lens relatively with themetal parts without liability of having it crack, as lenses frequentlydo when clamped too tight. v

By use of this invention the lens is not only maintained in rigidposition, but the sci-ew 2, owing to the pressure constantly exertedthereon, is prevented from accidentally turning to allow lateralspreadinglof the ar ms of the clamp a. Thus the relative secureengagement of the parts is constantly maintained. 4 I do not confinemyself to the specific details of construction nor design of the partsas herein shown and described, as it is obvious that under the scope ofmy invention I am entitled to slight structural variations. Forinstance, when the invention is applied as a coupler between the bridgeand lenses of a pair of spectacles the head end of the post would beslightly modified in shape.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is s In a coupler-for connecting a lens to thebridge parts of eyeglasses or spectacles, the

' combination with the metallic post having a screw-threaded recess inthe bottom thereof, and embodying the base, head and bifurcated clamp,each arm of said clamp having an opening thcrethrough, of the detachablespring, which is semi-elliptical in side elevation, and has acountersunk central opening and tapering ends rounded at their points,and a screw detaohably fastening the spring to the post and having itshead countersunk in the said opening of the spring, said spring composedof tempered hard metal and of a width equal to the distance between thearms of the said clamp, whereby the parts comprising the coupler arenormally attached, but readily detachable, substantially as shown anddescribed.

In testimony that I claim the foregoing as my invention 1 have signed myname, in presence of two Witnesses, this'6th day of February, 1903.

\VALTER W. CERVANTES.

Witnesses:

S H. GQODACRE, JAMES G. MCMURRAY.

